Home / 81,944.17-122,886.47-28,621.22

Finding the Fourth Proportional to 81,944.17, 122,886.47 and 28,621.22

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Solution

The fourth proportional to 81,944.17, 122,886.47 and 28,621.22 is: 42,921.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,944.17 : 122,886.47 = 28,621.22 : x
  2. Step 2: Convert to fraction form
    81,944.17/122,886.47 = 28,621.22/x
  3. Step 3: Cross multiply
    81,944.17x = 122,886.47 × 28,621.22
  4. Step 4: Simplify right side
    81,944.17x = 3,517,159,989.02
  5. Step 5: Solve for x
    x = 3,517,159,989.02/81,944.17
  6. Step 6: Final answer
    x = 42,921.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.